Spindle mounting



1953 D. G. SOUSSLOFF EIAL 2,648,948

SPINDLE MOUNTING Filed April 25. 1951 2 Sheets-Sheet 1 I} in i L-- Illlll I III] y W IN V EN TOR. D/M/ T/P/ 6. $0 USSL OFF BPNOLD (I WH/TE vI Aug. 18, 1953 D. e. SOUSSLOFF EI'AL 2,648,948

SPINDLE MOUNTING Filed April 25, 1951 2 Sheets-Sheet 2 IN V EN TOR.DIM/75V 6.500554 OFF ARA/OLD CT WHITE Patented Aug. 18, 1953 SPINDLEMOUNTING Dimitri G. Sousslofi', Warwick, and Arnold G. White, Greenwood,R. I., assignors to Universal Winding Company, Cranston, R. L, acorporation of Massachusetts Application April 25, 1951, Serial No.222,837

14 Claims.

This invention relates to a spindle mounting for a twisting machine,and, more particularly, relates to a spindle mounting of the kind inwhich the spindle is rotatably supported on a pivotally mounted arm.

The manufacture of textile material frequently involves the preliminarystep of twisting the strand material, such as textile yarn, from whichthe textile material is to be formed, in order to obtain a desiredmechanical characteristic or appearance in the textile material. Suchpreliminary twisting of strand materials is done on a twisting machine,and one type of machine commonly employed for this purpose is known inthe art as an uptwister.

The present invention may be used advantageously on the uptwister typeof twisting machine, and in order to facilitate an understanding of theinvention an embodiment of the invention which may be used in this typeof winding machine is illustrated and described herein.

A conventional uptwister consists of a plurality of yarn twisting andWinding pairs, each such pair comprising a rotatable spindle adapted tosupport a yarn supply, and a yarn take-up device which includes abobbin, spool or other core onto which the twisted yarn is wound.

It is well understood in the art that in machines of this kind thespindle carrying the yarn supply is rotated at high speed as the yarn isdrawn off the yarn supply by the take-up device. The degree of twistimparted to the yarn is determined by the relation between the windingspeed of take-up device and the speed at which the yarn supply isrotated by the spindle.

It is a common practice in the art to drive the spindles in a machine ofthis kind by means of an endless belt which drivingly engages the whorlsof a series of spindles arranged side-byside along the length of themachine. Such driving means provides a simple and inexpensiveconstruction which is capable of delivering equal driving power to eachindividual spindle, thus assuring a constant spindle speed throughoutthe machine, and a uniformly twisted product from all of the windingpairs. In order to obtain a constant spindle speed throughout themachine it is necessary to maintain all the spindles in contact with thebelt constantly by mounting the spindle so that the spindle may followthe undulations of the driving belt which occur at high belt speeds.This is generally accomplished by mounting the spindle on a swing armpivoted to a stand which is supported on the frame of the machine. Thepivoted swing arm is springpressed in the direction of the driving belt,and thus establishes a yielding driving engagement between the spindleand the driving belt.

Continuous and trouble-free operation of machines of this kind can beobtained only when the forces by which the spindles are held in constantdriving engagement with the belt are sulficient to insure uniformspindle speed, and at the same time not so excessive as to cause unduewear of the belt and the spindle supporting hearings in the spindlemounting. Operation of the machine causes sustained vibrations in thespindle mounting. Occasional adjustments of the spring tension by whichthe driving engagement is maintained are therefore necessary. Spindlemountings heretofore employed have been difiicult to adjust.

One of the purposes of this invention is to provide a spindle mountingof the kind discussed above in which the tension of the spring that actsto hold the spindle in engagement with the driving belt may be adjustedquickly and conveniently without dismantling any part of the spindlemounting or the machine with which it is associated.

In order that the spindle may quickly follow the undulations of thedriving belt it is necessary that the pivoted swing arm be free to moveeasily about its pivot. As the yarn supply carried on the spindle, thespindle itself, and the spindle step represent a considerable amount ofweight disposed on the distal end of the swing arm, the swing arm tendsto bind on its pivotal support and thus slows the response of thespindle to undulations of the driving belt.

A further object of this invention is to provide a novel means forpivoting the swing arm which provides a sturdy bearing between the pivotpost and its supporting means, and which utilizes the pivot means tohouse the adjustable spring arrangement by which the spindle and thedriving belt are held in driving engagement. This construction providesa. compact, efficient and readily adjustable spindle mounting.

A further object of this invention is to provide a spindle swing havingnovel means for lubricating the bearings between the pivot post and itssupport.

A further object of this invention is to provide a spindle swing havingmeans whereby the bearings between the pivot post and its support can beprovided with suflicient lubrication to last an extended period of time.

It is desirable in a winding machine of the kind described above to havemeans for interrupting the drive of each individual spindle, so that themachine operator may, as necessary, stop the spindle and replace anempty yarn supply with a full one. Such replacement by the operator isfacilitated by providing means on the spindle mounting which act toarrest the rotation of the spindle immediately following itsdisengagement from the driving belt, and by providing further meanswhich prevent the spindle from being dislodged from the spindle mountingwhen the operator thereafter doffs the empty yarn supply.

A further object of this invention is to provide 3 an improved. meansfor withdrawing the spindle from engagement with the driving belt of themachine which acts to lock the spindle in its disengaged positionsubject to quick, easy release.

A further object of this invention is toprovide' an improved means forpreventing the spindle from being dislodged from the-spindle mountingwhen an exhausted yarn supply is:r.emoved;from the spindle.

Further objects and advantages'of the invention will be apparent fromthe following description of the invention and from the accompanying.

drawings.

Blithe-drawings:

Eigure- 1 is atop .plan view of a spindle mountingsvconstructedaccording to this invention;

Fig, 2 is a front elevation view or" the same spindle mounting showingalso the lower porion ofgthezwhorlof a spindle mounted thereon;

Fig. 3risa vertical sectional view on line 33 ofzEigzl;

Fig; i' is at side elevational View of the same mounting, showing itsoperative relationship to a frame member, shown in dotted lines, and adriving -belt; shown in dotted lines, with which the mountingmay-beassociated;

Fig. .5z-ista section on the line 5-5 of Figure 1 showing the. cam meansby which the spindle mounted-ion the-'spindlemounting may be retractedfrom engagementwith a driving belt in the-:positioninwhich it effectssuch disengagement; and

Eigiifivisca;verticalsectional view on line 5-5 ofzFigurelshowing thesame cam in the position which it'assumes when the spindle carried bythe mounting; is in engagement with a driving belt.

In general, the embodiment of the invention illustrated in the drawingscomprises a base membenorstandiiiton which a swing arm 52 is pivotallysupported. Thetdistal end of the swing arm is adaptedrto. carry aspindle support indicated generally at I 4.? Aspindlecomprising aspindle blade I5, .to.;which is fixed the spindle whorl It, is rotatablysupported. on the support in the conventional manner; Thisspindlecarrying portion ofthe 'armispressed-lin a direction about its pivot which will cause th'e:spindle carried by the support to moveintoengagement with a spindle driving-meana such -as the driving belt I?shown in the-dotted linesin Figure l. The swing arm is urged inathi'sdirection by an adjustable resilient means which includes theheli'calspringlB shown in-Fi'gure 3; The spindle carried on the supportmaybedisengaged from the driving belt by operation of a hand lever whichrocks a cam 22- agai-nsta' cammingsurface provided on the swing arm.Th'e-= positions of the cam 22 relative to the=camming surface on theswing arrnwhen the spindle isdi'sengaged from, or engaged with, thedriving belt are shown-respectively, in Figures 5 and-16i-Meansareaprovided to prevent the cam 22 fromn-beingsrocked beyond itsdead center of relationship with-the camming surface on the arm -l2 so.that'th'eswing arm may be locked in the-position wherein. the spindleis disengaged from-the driving beltsubject to quick release byalight-upward pressure on the lever-2%.

The illustrated spindle mounting also coinprises-abrakemember 24 andaspindle retaining means 26iw-h-ich aresupporteo. on an upright post 28.This-post is supported onthe stand iS-and extends upwardlyth'erefromthrough an arcuate aperture =3lllin the swing arm 2. The brake member ispositioned sothat it engages the whorl [5 of the spindle carried by thesupport 54 4- when the spindle-is swuiigi'from engagemeht with thedriving belt H by means of the lever 29. The

' spindle retaining means 23 is positioned so that a terminal portionthereof overlies a flange provide'el orrthe spindle whorl I6 when theswing arm is rocked into its spindle disengaging position, shown in-Figure 5, thereby preventing the spindle from being dislodged from themounting when a yarn package orcore supported on the spindle is doffed.

In the particular" embodiment of the invention generally describedabove, the base member or stand i3 is a generally rectangular-shapedblock: havinga flat rear surface 3% which may suitably engage alongitudinally eiitieiidihg' frame member of'the machine with which the'spindle'moiinting' is to be associated, such a's'the member 36 shown indottedlines in i i gure t; andto which member it maybe fixed by studssuch'as 3%"a'nd' 49, also shown in dotted lines in Figure 4'.

The swing arm i2 is pivotally supported on the" stand it by meansincluding the tubula1'"piv'ot-' post ifwhich is fixedlysecuredwitl'iin'an a'p'ei' tureprovided towa-rdone end of the swing arm;The upper enol'of the tubular pivotpos't'l' tr ininates in the planeofth'e upper surface o'fthe" swing arm, and the lower portion thereofof:- tends downwardly from the underside of' the swing arm into therecess- 3 5 providedin' the stand l9: As shown in Figure 3; the recessit may be provided by-formingla through-going, vertically disposedpassage in the stand iii-which isclosed off at its lower end by. meansof a plug. 36 having. an upstanding. circular flange 68 Within thiscircular flange-the lower end'tt or the tubular pivot post dil may'bejournaledf Toward the upper endof the recess i l'th e wall thereof iscutback to receive the annular bearing 52 composed ofaporousbearing-material. The diameter of the bore -of bearing d-is'lessthan the diameter of recess iihtoprovide a spacehetween'pivot'post and the wall of'recess 44 adapted tocontain a supplyof I lubricant. The bearing-52 closely encircles the tubularpostcfi: TheWallet the cut back portion of the-recess is also recessed toreceivethe-annular oil wick 5 4* which is thus positioned tocontact andlubricatethe bearing 52; Wick E lis provided with a taillike dependingportion 55which is received in longitudinal groove'53 in'stand it to haveitslowermost end adjacent the lower bearing 48," 5%; and in contact withlubricant contai-ned in -the' space between pivot post 42 and the wallof recess 44. It-will thus be seen thatthe lowerbearingformed; bycircular flange 48' and the-lower end-50 of pivot post 12 'is' immersedin a supply of-lubri cent, and that the upper bearingis-lubricated 'by'lubricant passins'up thetail-like' portion 55%;: wick- 5 i and throughporous bearing member 52? It will be observed that th'e'bearing 52engages thepivot post 12 along asubstantial portion of ltslengtht Thisconstruction, whereby'thelower end of the post'is-steadied withinthecircular flange in and 1 a E large area ofthe intermediate portion turnswith-in the bearing-52 insures that the swing arm 12 will not-'bindonits 'pivot' even though the relatively large weight-oi the spindlemounting and the yarn package carried thereby 1s disposed' on the'distal end of the swing armz The distal end of theswing arm 1 2-isprovided. with an aperture which is circular-inoross'sec tion, and whichreceives the shell 55 of the-spin-- dle support M. The spindlesupportcomprisesa spindle step fifi in whicn the" spindle bladei 5 is journaledfor rotation, the spindle blade hav-- ing fixed thereto the whorl I6, aspreviously mentioned. The spindle step is elastically supported on theshell 56 by means which include the rubber rings 62, 64 which are bondedto the shell and to the metal washers 66, 68. The metal washers 66, 68along with the sleeve supportably engage the spindle step. The spindlemounting is secured to the swing arm by the set screw 72 whichthreadedly engages the walls of an aperture in the end of the swing armand abuts the portion of the shell 56 which covers the inner opening ofthis aperture.

As previously stated, the spindle carrying portion of the swing arm isspring pressed about its pivot in the direction which will cause thespindle whorl IE; to engage the driving belt IT. The adjustableresilient means by which this is accomplished includes the helicalspring I8 which at its lower end is fixedly positioned with respect tothe stand ill by means of the pin 80. This pin. threadedly engages thewalls of a horizontally disposed aperture in the lower portion of thestand I0 and extends through a circumferentially extending aperture inthe tubular member 42, as may be seen best in Figure 3. The end of thepin 00 is provided with two circumferentially extending grooves, and thelower end of the spring I8 is formed to pass downwardly in one of thesegrooves on one side of the pin, and to pass beneath the pin and have itsterminal portion rest in the other groove on the other side of the pin.This arrangement firmly anchors the lower end of the spring againstrotative movement with respect to the stand I0 and also looks pivot post42 against removal from stand I0 while permitting it to pivot freelytherein. The other end of the spring is fixed to a plug-like anchorage86 which. is positioned within the upper end of the tubular member 42 sothat it may be freely rotated therein. It will be seen that the tensionon the spring I8 may thus be adjusted by rotating the anchorage 86. Tofacilitate such adjustments a tool receiving recess 88 is provided onthe top surface of the anchorage. The spring means, thus adjusted to thedesired degree of tension, is secured to the swing arm I2 by means ofthe set screw 90 which threadedly engages the Walls of an apertureformed in the end of the swing arm and which extend through aregistering aperture in the tubular member 42 to abut the springanchorage 86 set in the desired position. With the anchorage 83 thuslocked to the swing arm, the spring I8 acts to swing the arm about itspivot and move the spindle carrying portion of the arm towards thedriving belt, whereupon a driving engagement is established between thebelt and the spindle whorl. It will be seen that in addition toobtaining a compact and eflicient construction wherein the spring meansis housed within the pivot for the swing arm, the construction is alsosuch that the tension on the spring may be quickly and readily adjusted.Manipulation of the set screw 90 and the anchorage 06 only are necessaryto adjust the tension on the spring. Both the anchorage 86 and the setscrew 00 are positioned where they are readily accessible and can beeasily manipulated at the same time. It will be apparent that adjustmentis accomplished by first loosening the set screw 90 and thereafterturning the anchorage 86 until the desired tension has been establishedon the spring. The set screw may then be tightened to complete theadjustment.

It has been previously mentioned that the spindle mounting comprisesmeans including the cam 22 for swinging the spindle carrying portion ofthe arm I2 away from the driving belt I 1 against the action of thespring I 8, and for look ing the arm I 2, subject to quick release, inthe position wherein the spindle is disengaged from the driving belt.The upper rear corner of the side of the stand I0 shown in Figures 5 and6 is cut back to provide a two-sided well having sides 94, 96 and abottom ledge 92 which underlies the cam 22. One end of the lever 20(shown in dotted lines. in Figure 1) is angled-over and journaled in ahorizontally disposed passage in the upper rear portion of the stand I0.This passage at one end opens onto the wall 96, and the cam 22 is fixedto the portion of the lever 20 which extends from this end of thepassage. The cam 22 may thus be rocked in a vertical plane between thepositions in which it is shown in Figures 5 and 6, respectively, byimparting an upward or downward movement, as may be required, to thehandle 98 which is fixed to the free end of the lever 20, and which isconveniently disposed across the front of the stand ID.

The cam 22 is provided with a nose portion I 00 which works against thecamming surface I02 provided on the arm I2 to swing the arm against theaction of the spring I8 to the position wherein the spindle carried bythe arm is disengaged from the driving belt. The camming surface I02 isformed in part on one surface of a lug I04 which extends from theunderside of the arm I2 into the two-sided well previously mentioned.

The relationship of the cam 22 and the camming surface I02 when theswing arm I2 is at the limit of its pivotal movement towards the drivingbelt is shown in Figure 6. A spring I08, shown in Figure 4, which iscoiled about the lever 20 and fixed to the lever and to the stand I 0.tends to move the lever 20 and the cam 22 toward the positions in whichthey are. illustrated in Figure 6. This upward rocking movement of thecam nose I00 is limited by the flush engagement of a surface I08 on thecam with the surface of the pad I I0 which is formed on the ledge 92. Atthis limit of upward movement the cam nose is free from the cammingsurface I02 and whorl I6 is in engagement with belt I! in response tothe action of the spring IS.

The spindle carried by the arm I 2 may be disengaged from the drivingbelt by moving the handle 08 downwardly from the position illustrated inFigure 6 to that shown in Figure 5, thus causing the cam nose I09 tomove downwardly along the camming surface I02 and to swing the arm I2against the action of the spring I8 tothe position illustrated in Figure5. This downward rocking movement of the cam nose is limited by theflush engagement of the planer surface I I2 on the cam with the surfaceof the pad H0. The surface H2 is positioned on the cam so that thedownward rocking movement of the cam is stopped when the cam assumes, orpasses slightly beyond, its dead center relationship with the cammingsurface I02. At this point, the force applied to the cam by the springpressed arm I2 has no vector about the pivot point of the cam andtogether with the action of brake 24, to be explained in detailhereinafter, establishes a frictional drag on the nose of the cam whichis sufiicient to overcome the tendency of the spring I06 to raise thecam to the position illustrated in Figure 6. A slight upward movement ofthe cam nose imparted by a slight upward movement of the handle 98,moves the cam. off its dead center and both the spring I06 and;

the -spring I 8 rthen;1ect' toremmrlthe ream and mg means and; a second"apertiireitowards its: the swin aarm to the pos ns ust ate n e ie otheien'd' to receive "atubular member; a down lire wherein theilspindilfCarried? y="-" a war-dly extending tubular "member fixedj- Withinengages the drivin'gsbeltz said"second "aperture and tei'mi'nating at-its' up The spindlWbTaKel- 24;?-previouslyfimentiondsi 5& per endtheplane of the-upperhorizontal-sur is pp 118post5283and consists -ofia-re face of'said swing element, said base 'm'ember silient metalstriphaving itstintermediates por being provided th e s: to'receive? d:tion curvedfconcentrically with 'the outside diam d wn rdly: t din rtin' id tubumr eter oflthe spindleiwlionl-i i5; v To this interme member,whereby the'said' swing element'is sup diate portion is fixeda:compositioniffictidn pad- 10 -ported-for pivotal movement on said'basemem 1 H5; seem bestinlFi'gu-re 1,: against whiclmthe her-, adjustablespring means acting on aidr;

spindle whorl'is brought to :bearrwhen it, is with swing element andtending to" impart pivotal awnf o a ement withs the driving 10F11movement I in one direction 'to' 11 said 1 swing elein themannerdescribed:above:toeflex ther ree ment; said spring. meanscomprising a 'helical silientmetal stripiiand thus aapply'l-azbrakingcef-f 5; spring disposed within said tubular member;- feet to thespindle Theibraking.effeet thusobe: meanslsuppgyted"on' d gbasevmemberfixedly} fiain mfiy besl'egillatedi and 'adillsillirililfllist tpositioning one end of thespring withweSpecft cflmpensateifori wear oflthe fricticn pad may b thereto; a plugelike' spring anchoragerotatablyr made: y" b i repositioning fi 1 5 23 supported in the upperend of sa'id tubular mem Within: the recess in the :standil i}zwithinwhich'it igg a; bets, the other end'of thespring beings-fixefi-topp ThBlJOSt isif-letained 11H 'DO tiO said anchorage, whereby the'tension-of said F thus' selected: by meanssoiithe set screw llfi spring:may be adjusted -.by'rotatingthesaidan- Which fi a yengagrssraihOI'iZOHtaHYJ' chorage, and means :for"releasably-securing saiclposedaperturein:theestandflandllwhionat-ithe wi gz lement tsaid'anchgrage.When-the-'de end of t ap op ins n th recess a t *25:sir'e'd degree of tension has been imparted to-saidthe-lowerencLofthEWD l? Inf-addition"tov'flps spring by'the rotation of said anchorage"to-a plying a-brakingiefiect :to ztheispindle theifiexed' selectedposition resilient metal stnfipalsoexerts aforcetonswingi 3; Aspindle'mountingifcr a'twistinge-mal'ghin-g? a !2, th ue nv or1 1sand-spindlelb de i5, cemprising base merhloer,-a swing element tOWaftiSit b6113- engagifig; Position ThiSfOICe? socpivotallyi carriedby saidbase member adapted" eXer'fiedi y rakei ifiin addition to =theforce ti-otatably support a-spindle;- springfimeans exertedinthesamedirectionby 'springw is sufii+;- urging said element ina directi -n-which== Ciento Overcome ya-of spr ;I 0 t will cause the spindleto be clrivi'nslyengaged-by pivot.cam:22 tozits" unlaitched: =position=il1ustratejd-: anassociated driving Tmeans; means for releas imFiafis ;ably withdrawingthe spindle'irom driVingen- The spindle retainingimeansazfi: consists ofagagernent with said'drivingmeans-comprising a ho'rizontallyivdispnsed:plate which: is also fixed". cam'm'ounted" on saidebase-member andadapted to thelpost 28 toa'oi/terlieethe swing iarmt l 2.; The: to herocked from a first position to-a second posiplatesextendsradiallyiromsthe po'sttotthe point tion, a *camm-in'g surfacepositioned-onsaiclswing where thevedgepizthez plate zov'erliesaflange-11ml n10 .el'em'entato' cooperate 'withf-sai'd oam; means' for;formed omthebottorrraedge OfthBiSDiIl'dlE whorl" roakiiignsaidcamfrom-said-first positionto said M: evnen thei swine arm'zis locked inthe position: second positionwhereby i n a e sai urf e whevejnihsz'spind l e carriedlrbymthe: a mpi ,.;=ldi to moitesaidswingelement aWay fBom-saidspin engaged from the driving belt; Thepla'te Zfi thus l d iv ng means a action said spring/land a resilientbrakingvmember: adapted; to' be engaged by a portion of saidspindle -as=it is :moved away from said-spindle driving @m-eans tostop-the'rotationof saidespindle; said resilient brakinganember exerting a force on saiclswing element to: prevent. said-cam item rocki-ng'irom said secondposit-ion tow-said first position until said roekingimeansis actuated;

positioned-- prevents-'-the spindle from bein'g': dis- 4 5 lodged-fromits mounting -When a yarn paok age; or a core-thereof, isremoved-fromthespin die blade.

The claims of invention that-are desired to -be secured-by LettersPatent are set forth below 1. A spindle :meunting for a twisting machinec0mprising-abase=member,' a 1 swingelement adapterl'toreceivemeansionrotatablrsupport Lina splldlflmountmgfw twlstmgmai m spindle andhaving an =aperture,-thereimqa chine of the kllld'ln which a swingelement carry tubular member-extending from said swing elermatably'supported Spindle pivotauy p ment and secured-thereto in said-aperturepa ported on a base member'andspri g urged a re id -L idbase;memloerito'.recei e clirecti-omwhioh will causethe spindle to-=-bedrivthesaidextending.tubular.membenmvherebysaidi yengagedlbyan s wdriving nls swing welement; isepivotally supported'on isaid means *fOIreleasably WithdTaWing' t e p dl basemember, .a helical springdisposedr' with ini from-driving engagement with said driving means" thesaid tubularqmember; means supported one comprising a camrockablymounted on said-base t s -m mb r x y p oni s n nd ofr membenacamming. surface positioned on said. Said Spring with respfict thereto,Spring n swing ielement-to cooperatewith said cam; a hand' o es-ei s asupportedin saidl'tubular lever fixed-tosaid-oamioi rockingsaidcamfintomb r -'s iu s P ioperative engagementwith said surface'vvhe re'by' theother e dp m pr me fi to the the spindle; supporting portion ofsaid-swing as;

a aee andimeans for releasablwsecuh mentc-is -meved= away fromsaidspindle driving ing s i ines Said anchorage i a means against-the actionof-the said spring, ands M sit Qe i a u t o the anchorage. meansfor-preventing the said" cam from" being s ina m unt s for a W-Sting-.maohine1. rocked- -toward sa-idcammingsurfac beyond its mari neaase e x Yd deadeenter -relationship thereto; Wherby' lthe" DOS q W ;E madapt/861410 Preceivfimeanfi spindle bearing --portion of I said. swing1 element fo i rotatablysupperting a spindle. said-swingm may be lockedaway from the spindle' drivin g' elementbeing prgvided withan laperturetoward means subjectio quick release.

one endgthereofi togreceive-saidspindlesupport-1 5. In;. aspindlemounting for"a twisting-machine of the kind claimed in claim 4 inwhich said swing element is horizontally disposed and has a dependinglug and in which said camming surface is formed partially on one side ofsaid lug, the said base member being arranged and constructed tocooperate with said lug to limit the pivotal movement of said swingelement away from the spindle driving means.

6. In a spindle mounting for a twisting machine of the kind in which aspindle is rotatably supported on a swing element which is pivotallymounted on a base member and spring urged towards a spindle drivingmeans, and which further includes means operable to withdraw the spindlefrom engagement With the spindle driving means by causing the spindlecarrying portion of the swing element to pivot away from the spindledriving means; a spindle having a flange on the whorl thereof, a spindlebrake supported on the base member and positioned to be engaged by thespindle when the spindle is swung from engagement with the spindledriving means, and a retaining element supported on said base member andpositioned to closely overlie the said flange when the spindle is movedinto engagement with said brake, whereby a package supported on thespindle may be removed therefrom without dislodging the spindle from itsmounting.

7. In a spindle mounting for a twisting machine, a stationary brakeelement, means for receiving a spindle having a flange portion providedthereon, means for moving the spindle from engagement with a spindledriving means into engagement with said brake element, and a retainingmeans positioned to closely overlie said flange portion of said spindlewhen said spindle is in its brake engaging position, whereby a packagemay be removed from the spindle in its last said position by an upwardpull without dislodging the spindle from its mounting.

8. A spindle mounting for a twisting machine comprising a base member, aswing element pivotally supported on said base member and adapted toreceive means for rotatably supporting a spindle, a resilient memberfixed at one point to said base member and adjustably fixed to saidswing element, whereby the spindle carrying portion of said swingelement is yieldingly urged in one direction towards a spindle drivingmeans, means for releasably moving the spindle carrying portion of saidswing element in the other direction comprising a cam rockably mountedon said base member, a camming surface positioned on said swing elementto cooperate with said cam, a hand lever fixed to said cam for rockingsaid cam into operative engagement with said camming surface, wherebythe spindle carrying portion of said swing element is moved in saidother direction against the action of said resilient member, and meanspreventing said cam from being rocked towards said camming surfacebeyond its dead center relationship thereto, whereby the spindlecarrying portion of said swing member may be locked at the limit of itsmovement in the said other direction subject to quick release andmovement in said one direction in response to the action of saidresilient member.

9. A spindle mounting for a twisting machine as claimed in claim 8 whichalso comprises means for receiving a spindle having a flange portionprovided thereon, and a retaining means supported on said base memberand positioned to closely overlie said flange portion of said spindlewhen the spindle carrying portion of said swing element approaches thelimit of its movement in the said other direction.

10. A spindle mounting for a twisting machine as claimed in claim 9which also comprises a stationary brake element, said brake elementbeing positioned to be engaged by said spindle as the said spindlecarrying portion of said swing element approaches the limit of itsmovement in the said other direction.

11. A spindle mounting for a twisting machine as claimed in claim 10which comprises a post extending upwardly from said base member throughan arcuate aperture in said swing element, said brake element and saidretaining means being fixed to said post to extend radially therefromabove said swing element, and said post being adjustably secured to saidbase element, whereby the said brake and retaining means may bepositioned as described with respect to the limit of movement of saidspindle bearing portion of said swing member in the said otherdirection.

12. A spindle mounting for a twisting machine comprising a base member,a swing element adapted to receive means for rotatably supporting aspindle, a tubular member extending from said swing element and securedto said swing element, a recess in said base member, bearings fixed insaid recess to receive the said extending tubular member, said bearingsengaging said tubular member over a substantial portion of its length, ahelical spring disposed within said tubular member, means supported onthe base member fixedly positioning one end of said spring with respectthereto, a spring anchorage adjustably supported in said tubular memberfor adjusting the tension of said spring, the other end of said springbeing fixed to said anchorage, and means for releasably securing saidswing element to said anchorage in a desired position of adjustment ofthe anchorage.

13. A spindle mounting for a twisting machine comprising a base member,a swing element pivotally carried by said base member and adapted toreceive means for rotatably supporting a spindle, a pivot post extendingfrom said swing element and secured thereto, a recess in said basemember, upper and lower bearing elements in said recess rotatablysupporting said pivot post, and means for supplying said upper bearingelement with lubricant from adjacent said lower bearing element.

14. A spindle mounting for a twisting machine comprising a base member,a swing element pivotally carried by said base member and adapted toreceive means for rotatably supporting a spindle, a pivot post extendingfrom said swing element and secured thereto, a recess having acrosssectional area greater than the diameter of said pivot post in saidbase member, upper and lower bearing elements in said recess rotatablysupporting said pivot post in said base member and providing a reservoirfor lubricant between said post and the wall of said recess, and meansfor transporting lubricant from said reservoir to said upper bearingelement.

DIMITRI G. SOUSSLOFF. ARNOLD 0'. WHITE.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,993,584 Bartholomew Mar. 5, 1935 2,252,037 Schaum Aug. 12,1941 FOREIGN PATENTS Number Country Date 498,704 Great Britain Jan. 12,1939

